Plow for rotary chargers



Jan.' 1, 1946'. Ep., COOPER 2,392,231

PLOW FOR ROTARY CHARGER Fiied May 1:5, 194:5

j vIN1/151111012.`

I BY Eler fav/4er HTTORIVE Y Patented `lan. l, 1946 {UNIT-ED STATES-flican v"Smelting and Refining Eomfpany, New

=ork, iN; afcorporation of New "Jersey epplcaticaMay V1.?,

1943.sera1 am@ 2 claims. (C1. 22a- 29m This inven-tionrelates generallyto .the metal,- lurgical processknown sinteringand more partioularly todevices. rior, feeding the 1charge ``t. be sintered to thesiniermgmashine- `Still more particularly.- .tlie invention relates to a iplowmechanism tofiremove .the charge, from the turntable of a @tary-chargeryintothe ypallet feedingchutef When watery charger isesedifimixeed feedmecharge to the; entering maghineralleis., .it is conventienal,practices v echarse fthe-mat al ontofa rotating iurlnieblejanswrih.immaterial is caused to travel toward the periphery'.Adeecting,Pl'begandgimspnie instances a plurality of plates, positionednear the mouth of the chute deects the material off the periphery intothe chute from which it is discharged on to the pallets which move underthe discharge opening of the chute.

This invention provides a curved plow mechanism of novel constructionwhich is simple to make, low in cost yet eiects a uniform distributionof the charge into a chute and is adjustable with ease and facility.

In accordance with a prefered embodiment of the invention, the plow fora conventional rotary charger turntable of approximately six feeddiameter is made of one quarter inch steel plate, about seven incheshigh and ve feet long. The first three and one half feet, from thetrailing end of the plow, is curved to the radius of the table and actsas a distributor while the last foot and one half breaks away moresharply back toward the table to act as a scraper to deflect the streamof charge into the path of the distributor. The trailing end of theplate is pivoted at the edge of the table, while the distance from theperiphery of the table to the leading end of the plow is adjustable by ahandwheel to produce an even material overflow along the periphery intothe chute to charge palletsof three and one half foot width.

The principle of the design and operation of the plow is that the curvedportion of the blade nearest the pivot corresponds to the periphery ofthe turntable so that the distance between the blade and peripheral edgeof the table decreases uniformly in the direction of rotation of thetable. This portion is herein referred to as the distributor portion.The portion of the blade nearest the leading end (herein referred to asthe scraper portion) is curved more sharply toward the axis of the tableto provide a scraper to deilect the material into the path of thedistributor portion. By reason of the shape of the distributor portionthe material is` dflectedwoi the-periphery ,of the, edge ,Qgf :the turnable. linifprnilyalgng these@ .reif-flashers@ of in.

evation, partly'in section, on line 2-2 of Fig. 1.

Referring now to the drawing, the turntable I is mounted on a shaft I Ito rotate in a bearing I2.. A bin I3 is mounted above the table with itsdischarge opening I4 off the axis of rotation of the turntable. Adischarge chute I5 is mounted adjacent the periphery of the turntableand ordi-v narily will have a Width corresponding to the width of thepallets of the sintering machine to be charged. As will be understood bythose skilled in the art, the material I6 is discharged from the bin I3on to the rotating table I0 and tends to move toward the periphery. Asthe material 30 reaches the plow it is deiiected off the peripheral edgeof the table into the chute I5.

The blade of the plow consists of a single plate 20. However, forpurposes of description, it may be said to comprise a distributorfportion 2l and a scraper portion 22. The trailing end of the plate ismounted on a fixed pivot 23 so that it may be rotated about the pivot tomove the leading end toward or away from the chute. That is, the scraperportion may be adjusted to extend into the path of the material movingon the table to any desired distance. It will be apparent that if it isdesired to deect more or less material into the chute, the scraper isadjusted to take a bigger or smaller bite into the stream of movingcharge. To eiect this adjustment there is provided a handwheel 24mounted on a threaded stem 25 which in turn is movable inwardly andoutwardly in an internally threaded boss or nut 26 which may be ixedlymounted, as by rivets, to the chute. Other means of mounting theadjusting mechanism will be suggested by the disclosure. The oppositeend of the threaded stem 25 is pivotally attached by a pivot pin 21 to alink 28 which in turn is pivotally attached by 55 a pin 29 to a bracket30 iixed to the plate 20 4at a convenient place on the plate at aboutthe vbeginning of the sharp bend. To adjust the plate todeflect from thetable the desired amount of `-charge yfrom the moving stream ofmaterial, the

handwheel 24 may be rotated in the direction `n'epessary to effect thedesired result.

It-is signicantto note that the distributor :portion 2i` of thevplow hasa curve, theA raduspf` vwhich is substantially the same as the radius ofthe turntable,'while the portion 22 is curved Yto `give a sharper bendto form a scraper portion to d'eect the desired amount of charge intothe Width. f Y

` What is claimed is:

1. A device for charging material to a sintering machine whichcomprises: Y a turntable, aV charge bin to feed the charge on to saidturntable,V said bin being mounted above'the turnftable with thedischarge Opening of the former oi the axis of rotation of the latter, acharge chute having an opening adjacent the periphery of said turntable;and a plow device, said plow de- -1 vice comprising a oneepie'ce platehaving a distributor portion and a scraper portion and extendingroverthesurface ofV said turntable, said distributor'po'rtionbeingl curved tosubstantially of .said turntable and said scraper portion being aseaas pVcurved more sharply than aidV distributor poi tion, a pivot adjacentthe periphery of said turntable near said .chute pivotally mounting thetrailing end of said plate, and adjustable means connecting with saidplate fory rotating said plate Y on its pivot to adjust saidsfcr'laperportion in the fpath of travel of charge fed to said turntable.

2. VA plow Idev ice for charging material to a sinterinig,r machineWhichicomprises:V a turntable, acharge bin to feed the charge on to saidturntable, said bin being mountedrabove the turntable j with thedischarge opening of the former off the y axis ofrotation of the latter,a charge chutehaving a material receivingv opening adjacent theperiphery of said turntable, and a plowYY device,

said plow device 'comprising aV one-piece plate Y having a distributorportion andar scraper portion vand extending over the surface of saidturntable,

said distributor portion being'r curved to substantially the same radiusof curvature as the periphery of said turntable and said scraperportionber- 'Y ing curved more sharply than said distributor portion', a pivotadjacentthe'periphery of said turnf table near said chute pivotallymountingthe trailtion of said stem, and a link connecting said stem andplate, said link acting to move the lead- Y i the same radius ofcurvature as the periphery Y,

ing end 'ci said plate, means mounting an internally threaded member,anex'ternally threaded stem Vin saidmember movable toward or away fromthe periphery of said turntable upon rota-- ing end of said platetoward'or-away from the periphery of said turntable upon rotation ofsaid stem;

Y ELBERTv M. COOPER, y

